Speed changing and reversing gearing.



PATBNTBD MAY 26, 1.908.

No. 888mm L SALTERQ SPEED GHANMNG Mm Mmmm@ @Emma PATBNTBD MAY 26, 1908.

W. A. SALTER.

SPEEDCHANGING AND REVBRSING GEARING. Hummm, mm' 2218.111J 1907.

2 SHEETS-SHEET 2.

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4for the final driven member.

WILLIAM A. sALrna/or CEDAR POINT, KANSAS.

SPEED CHANGING AND REVERSING GEARING.

Sp'eci'caton of Letters Patent.

Patented May 26, 1908.

Application filed February 12, 1907. Serial No. 366,983.4.

To all whom it may concern:

Beit known that l, WILLIAM A. SALTER, a citizen of the United States,residing at Cedar Point, in the county of Chase and State of Kansas,have invented new and useful vImprovements in S eed Changing and'direction to a rotating driven member.

Many' diderent means have heretofore been proposed to accomplish thisresult, but this invention contains elements of novelty and simplicityand completeness which render it a distinct improvement in the art.While .there have been other change speed means proposed providing forim arting to the driven member dierent s ee s forward and reverse, theygenerally on y provide for one, two and three speeds forward' and onereverse,while in this invention, l have as man speeds on the reverse asthere are on the fbrward movement of the driven member, and at the samevarying relative rotations.

The present invention is an improvement on an invention of mine inreverse gears for which Letters Patent of the United States were grantedto me May 7th, y1907, No. 853,120.

Broadly speaking, my invention consists of two elements broughttogethcrand working as one mechanism, for the attainment of one completeresult. rlhe first element in the series is a power driving member,connected by a speed changing means to a re-V volving shaft, which shaftalways revolves 1n the same direction as the driving member, but throughthe speed changing means is ca'- pable of control through varying ratiosof rotation, relative to the rotation of the driving member.

The second clement of the invention produces, the reverse and forwardmovements This reverse gear is the subjcctof the aforesaid ap 'lication,and provides a driven member wit two facing bevel gears securedtogether, and a. bevel pinion of smaller diameter than the distancebetween the facing bevel gears. Said bevel pinion is secured to thevariable speed revolving shaft, above spoken of, and is journaled in abearing capable of being moved laterally, so as to -bring the bevelpinion into engagement with either one of the facingbevel gears,releasing it at the same time from the other one. As the bevel pinionalways revolves in one direction of rotation, when. engaged with one ofthe facing bevel gears of the driven member it causes the latter to`rotate in one direction, but when the bevel pinion is moved intoengagement with the-other facing bevel gear,- it causes the drivenmember to rotate in the re; verse direction. f f

ln carrying out the details of this invention, l have preferably adoptedthat' form of speed changing means, wherein\the various s eeds can beattained without the need of s ifting gears, and wherein when the highspeed is attained, the'whole mechanism revolves as a whole or unit,acting as-a balance wheel, conserving power and securing very steadyrunning.

While the exact arrangement herein shown is, l believe, the simplest forthe results it accomplishes, it is capable of many modi fications, yetembodying the spirit and substance of the invention, and the equivalentsthereof.

Referring to the drawings forming a part of this speciiication. Figure 1is a sectional top plan`view of a chassis partly broken away, showing indetail the arrangement` of the i vention giving three forward speeds andt iree reverse speeds. Fig. 2 is a modification `thereof giving only twoforward and two reverse speeds. Fig. 3 is a sectional end view showingthe arrangement of gears in Fig. l relative to the speed changing means,

and Fig. 4 shows an equivalent of the speed i "atiiaf tinte. "treni oneto the otheirby orally inovable bearing nioehanisni, but l. have shown asimple hand.

and having a latch notehesnt a quadrant lit).

9. There are preferably two sets ei' thesei gears, as shown, and thepinion in wteh set t meshes 'with a driven spin' gear It) sleeved on ythe shaft 3 and carrying one part of' a roep f ling by which it isconnected with the rear l wardiy extending driving' shalt. tl. 'the jcoupling is, preferably, a universal lioint t2. y

A easing' i3 surrounds thegmn'ing, and is l provided with.' an internalgear tl meshing g with the gears t5. '.lhe easing' and the vage l arebeth rotatable toneentriiA with the shalt 3, and the cage has 'a drinnti outside ot the easing. tineireiing thisl drnni is a hand brake 15,by" means ol' `whit-h thi` revolution of the cage een be eheeked at thewill ol' the operator. Two band ybrakes surround titte easing, one ofwhieh, iti, is stationary, whilei the other, 17', is mounted on androtates ivitxti 'f the tly\vl1eel ljwhieh is scoured to the shalt 3 ofthe'inotor. A sliding eollar it), tron-` trolled by a lever 2t), enablesthis latter brake to be applied. and released. y

This Construction provides tor three speeds ot the driving shaft 1 t.When thehand t5 tightened and the cage t) is held stationary, thepinions 5, and the gears tj, 1t), operatil like' an ordinary haeltgearing', .and drivethe which can `he ini mrted to the driving' shaltare thus availaldle not only in running' l`orard hut in the rtw-risc..

ln the nzoditir'ation shown in easing' il has no internal gear, andserres as 'the enge in whivh are mounted in the counter shafts #t2 onnhieh the gears t3 and pinions T are joinnaled. (lne olI tht` band.brakes i serves to hold the easing stationary. and the other, f-t, tolot'lt it. to the Il \'\\'hel. 'lllis eonstrtietlon thus gives only twospeeds.

in the inodilieation shown in. Fig. 4, th(l 'gearing is replat'i-d by a.hydraulic elnteh. in a easing 155 sec-tired to thedriving shaft is -nnet'eentrie motor shaltfi on Ivs'hith is earried a piston or vane 17ea'pableoi sliding dianwtrieally with rolt-renee to said motor tshaft'and'litting at its edges the interior ot'` `.the easing. A body ol' oilor the likel lills the [easing and is eaused lo oirenlate by therottation ol' the piston. .tt valve ISS provides ,for retarding theeironlation ol' the oil either partially or totally, so that the'drivenmember (the easing) van be rotated at various eontrolied speeds relativeto the rotation o`|I the driving nten1her(tlie piston). nient gives anindelinite range .ol' slweds.

l"ig'. 12, the

shaft t1 at a slow speed. When the hand It is tightened, the casing' 13is held stationary, and the cage revolves slowly, the gear it) beingdriven at a more ra When the band 17 is tiglttened, the easing looked tothe nxotonshalit and revolves at the `sanne speed, carrying the gearsand rage with :it and imparting' to the drivenshalt ,it the saine speedas that ol the motor shalt,I or 'what may be called a direet drive.Under these last eonditions 'the weight oi the gears, eage and easing isadded te that oll the-ily- Wheel and assists in imparting' steadiness ofrunning.

The driving shaft 1t terminates near'the driven-shalt 21, Vwhieh inay beprovided with 'a drain. 22, pi'iwided with two bevel gears 23, 24, aeingeaoh other. liet/Ween thorn is leeated a driving pinion 25, secured tothe driving' shaft il, and olsut-h a dian'leter thaty it engages onlyone elz said bevel gears it is capable ol', being shifted reason ol.'lthe` lat- 26 .in which the drivyshalt .t1 is journaled at its rear end.The IJearing may be shifted by any suitable lever 27 eonneeted 'with thelmaring .1y a rod :Ztl engaging with .ln practice this lever would beplaeed within eoi'ivenient reaeh of" the operator ol' the meehan'isni.The illustration is, oi eonrse, diagrailnnatie.

,As the drivingI shalt always rotatel in the v saine dirertionJ areversal oll n'iovement ol the ineelntnisnl ean. be seeured .by simplyshitting the pinion 25 trein the bevel gear 23 pid rate than before. l

'l`l makes a very eoinpatt highl v elli-nient and meritoriousineehanisln, and as the planetary ohangespeed nleohanistnis ot averyshort length axially7 it follows that by having the eontroiiing lever 2Uand the sliding eollar it) ioeated on the opposite side of the balanee.Wheel from .the planetary change speed meehanisin, next to the -niotor,the whole een without undue length be earried on the motor drivingshaft, thus .conserving power and eliminating' i'rietion.

ilaving' thus deseribed my invention, what I elaiin is: l

1. tn a change speed transmission,meoh anisin, the eoinbination of adriving shaft, a tubular driven shalt sleeved thereon, a small pinioninodnted on and rotating with the driving shaft', a ylarger geareenneeted with the driven shal't7 a stepped gear connecting said pinionon' the driving' shaft and gear on the driven shaft and mounted torotate about. the axis ot' the driving shaft and also about anindtqiendent axis, a easing rotatable about the axes oi the shafts andprovided with' 'an internal gear meshing with larger ot' the pinions ofthe stepped goat", means for preventing .said easing frein rotating,other means [or preventing said stepped gear from rotating about theaxis o'l' the driving sha'lt and lneiins mounted upon and` rotating withthe driving shaft' t and adapted to engage with the easing' in order tolook the saine to said shaft. o

2. .ln a (,:intngesspeetl gear, 'the combina-- tien oi a driving shaftrotated in oinnlireetion to the bevel gear 2li. '.the three speedswh/eeion said shaftJ planetary speodmhang only a drivingpinion thereon,a balance.

This arrangtt iis t'tonstrln'ttion ol' the difl'erent parts,

ing mechanism meshing with .said pinion, a oluteh earriod by saidbalance4 wheel and adapted to engage with said speerl-eha'ngingmechanism, and means for operatji11g said clutch ylocated on theopposite side of said wheel from thel spend-olianging rneohanism.

3. in a Change-speed gear, the eo111l. in:1 lion ot' a power drivingshal't a power drivingpinion thereon, a balance wheel also see-tired tnsaid' shaft, an intermediate spur gear ladapted to revolve on saidshalt, a planetarwY 'gear-carrrynlg cage Jonrnaled tio revolveooncentric with said driving shalt, stepped .speerl-rednoing gearsjonrnaled in said eage .(.a1 'ryin'g cago j'ournaled to revolve on said.

sha-ft-oonoentrio tl'lerowith, stepped sneedrednoing gears jonrnaled insaid 'rf-age and meshing with the driving-pinionland tho spur gear, anouter 'asing jonrnalod to re- Volvovoonoentrio with the. driving shaft,an accelerating internal gear carried by said casing and engaging' withthe stepped gears,

a band brake. for retarding the rotation of the, cage, a band brake forretarding the rotation olE tho casing, a clutch oarrimi by said balanoowheel and adapted to look said casing to said wheel, and means Yl'oroperating said clutch located on tho oppositeside, of said wheel tronisaid Casing.

A 5. The combination with a }'1owe-r-driVen sha-'ft7 of a pinion securedthereon., a sleeve on said shal't7 a gea-r wheel at one ond of saidsleeve- 'and a. sha-ft coupling at thel other, a goarmarrying cagerotatablo on said shaft and sleeve, and haring a hub concentric withsaid sleeve, one or moro counter-shafts carried by said cage, a steppedgear on each counter-shaft, the larger part of said stepped gear`meshing with said pinion, and the, smaller part with said. gear-wheelon said sleeve, a casing inolosing said pinion and gears and rotatableon said shaft and the hub n 5)? of said cage, a fly-wheel on said shaft,a band chit-oh carried by said fly-wheel and' engaging with thooutside.- oi said casing, a statimrary band bra-ke. adapted to engagewith the ontside of said casing7 and another stationary bandl brake.adapted to engage. with the hub oi said cago.

In testimony wheroof I have signed my naine` to this specification inthe presence of t two subscribing witnesses.

Willman A. s A'rJrER.

